there are some real advantages to shooting with EVF -- the biggest being WYSIWYG viewing in any of the 'auto' exposure modes. Being able to preview WB, Exposure, DOF, live histogram, IBIS effect, etc. in the viewfinder is a great benefit.

All these things you listed make the possibility of a hybrid E-5 successor even more exciting that a straight DSLR. Imagine E-30-like size/weight, E-5-like built, stuffed with all these technological goodies plus couple more reserved for the flagship, even more refined IQ... if that's not salivation-inducing perspective, I don't know what is.

Now stop that! Cruel and inhumane punishment to salivate for any extended period of time!